A busbar support structure

Abstract

The present invention discloses a busbar support structure, comprising two support rods, at least one group of crossbeams and at least two guide columns, each group of crossbeams comprising two crossbeams for fixing the busbar, the two support rods being used to be fixed on a mounting platform, guide columns being arranged on the support rods, the guide columns extending along the length direction of the busbar, the two crossbeams being sleeved on the guide columns through first fixing holes, wherein there is an action force between the guide columns and the inner wall of the first fixing holes, the action force causing the two crossbeams to be fixed statically on the guide columns, when the two crossbeams are acted upon by an external force and the external force is sufficient to overcome the action force, the two crossbeams slide along the guide columns, thereby, when the busbar undergoes thermal expansion and contraction, the crossbeams can be prevented from obstructing the normal movement of the busbar, which is beneficial to preventing the outer layer of the busbar from being torn and improving the service life of the busbar.

Description

Technical Field

[0001] The invention relates to the technical field of busbar installation, and in particular to a busbar supporting structure. Background Art

[0002] The hollow tower of the wind turbine generator set is equipped with an electric energy transmission device such as a busbar. The upper end of the busbar is connected to the generator output twist cable, and the lower end is connected to the converter cabinet at the bottom of the tower. The function of the busbar is to transmit the electric energy generated by the generator to the converter cabinet, and finally enter the wind farm booster station and be connected to the power grid. The busbar is generally fixed in the tower by a supporting structure. The common supporting structure generally includes a base and a pair of beams fixed to the base, and the pair of beams are used to clamp the busbar. The busbar will expand and contract due to different environments or different climates, and thus move. In order to adapt to the thermal expansion and contraction of the busbar, the existing support structure usually makes the gap between the beams slightly larger than the outer diameter of the busbar, so that the busbar can slide between the beams under the action of thermal expansion and contraction.

[0003] However, the existing crossbeam is usually fixed on the base and cannot move. Once the busbar gets stuck in the crossbeam, for example, the friction between the busbar and the crossbeam increases, the busbar is stuck in the crossbeam and cannot continue to move, which can easily tear the outer layer of the busbar and reduce the service life of the busbar. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a busbar support structure, which can enable the crossbeam to move with the movement of the busbar when the busbar expands and contracts, thereby preventing the outer layer of the busbar from being torn and increasing the life of the busbar.

[0005] In order to achieve the above-mentioned object, the present invention provides a busbar support structure, comprising two support rods (1), at least one group of crossbeams (2) and at least two guide columns (3);

[0006] Each group of the crossbeam groups (2) comprises two crossbeams (21) for fixing the busbar, the two support rods (1) 1 are used to be relatively fixed on the mounting platform, at least one guide column (3) is fixed on each support rod (1), the guide column (3) extends along the length direction of the busbar, both ends of the crossbeam (21) are provided with a first opening, the two crossbeams (21) of each group of the crossbeam groups (2) are connected by a fixing member (22), the first opening is a non-closed opening, so that the first openings at the same end of the two crossbeams (21) together form a first fixing hole (A), wherein a guide column (3) on one support rod (1) passes through the first fixing hole (A) at one end of the two crossbeams (21), and a guide column (3) on the other support rod (1) passes through the first fixing hole (A) at the other end of the two crossbeams (21);

[0007] There is a force between the guide column (3) and the inner wall of the first fixing hole (A), and the force causes the two cross beams (21) to be fixed statically on the guide column (3); when the two cross beams (21) are acted upon by an external force and the external force is sufficient to overcome the force, the two cross beams (21) slide along the guide column (3).

[0008] Wherein, the acting force is the friction force between the guide column (3) and the inner wall of the first fixing hole (A).

[0009] Wherein, the acting force is the clamping force of the two cross beams (21) on the guide pillar (3).

[0010] Wherein, the guide column (3) and the support rod (1) are fixed by welding or screwing.

[0011] Wherein, the support rod (1) is provided with a second fixing hole at a position corresponding to the first fixing hole (A), and the guide column (3) is fixedly connected to the support rod (1) after passing through the second fixing hole.

[0012] The first opening on one end of the cross beam (21) is a semicircular hole, and the first opening on the other end is a semi-elliptical hole, so that the first fixing hole (A) on one end of the two cross beams (21) is a circular hole, and the first fixing hole (A) on the other end is an elliptical hole.

[0013] The guide post (3) inserted into the elliptical hole has a smooth surface, and one end of the guide post (3) inserted into the circular hole is a threaded end, and the other end is a nut end;

[0014] The support rod (1) is provided with a second fixing hole at a position corresponding to the first fixing hole (A), and the threaded end passes through the second fixing hole and is fixed to the support rod (1) via a nut (12).

[0015] Wherein, the fixing member (22) is a bolt, and through holes are provided on the two cross beams (21), and the bolt cooperates with the through holes to connect the two cross beams (21).

[0016] There are a plurality of fixing members (22), and the number of the through holes is the same as the number of the fixing members (22).

[0017] A plurality of second openings are provided in the area between the two ends of the crossbeam (21), and the second openings are non-enclosed openings, so that the second openings corresponding to the positions of the two crossbeams (21) together form a third fixing hole (B), and each of the third fixing holes (B) is used to fix a busbar.

[0018] Wherein, buffer pads are provided on the hole walls of the first opening and the second opening.

[0019] There are two groups of crossbeams (2), and the number of guide posts (3) on each support rod (1) is the same as the number of crossbeams (2).

[0020] Beneficial technical effects of the present invention: the support structure of the present invention includes two support rods, at least one group of beams and at least two guide columns, each group of beams includes two beams for fixing the busbar, the two support rods are used to be fixed on the mounting platform, at least one guide column is fixed on each support rod, the guide column extends along the length direction of the busbar, both ends of the beams are provided with non-closed first openings, the first openings of the two beams of each group of beams located at the same end together form a first fixing hole, a guide column on one support rod passes through the first fixing hole at one end of the two beams, and a guide column on the other support rod passes through the first fixing hole at the other end of the two beams, thereby connecting the beams and the support rods together, wherein the guide column and the first fixing There is a force between the inner walls of the holes, which makes the two beams fixed statically on the guide pillars. When the two beams are acted upon by an external force and the external force is sufficient to overcome the force, the two beams slide along the guide pillars. Therefore, when the busbar is deformed due to thermal expansion and contraction, if the beams clamp the busbar, the movement of the busbar will generate a certain thrust or pull on the beams, that is, an external force acts on the crossarm. When the thrust or pull overcomes the force between the guide pillar and the inner wall of the first fixing hole, the beam will drive the fixing part to slide upward or downward along the guide pillar under the action of the thrust or pull, that is, the beam moves with the movement of the busbar, thereby avoiding the beam obstructing the normal movement of the busbar, which is beneficial to prevent the outer layer of the busbar from being torn and prolonging the life of the busbar.

[0021] In order to make the above-mentioned objects, features and advantages of the invention more obvious and easy to understand, the preferred embodiments of the present invention are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic structural diagram of a busbar support structure provided by an embodiment of the present invention;

[0024] Figure 2 A top view of a support structure of a mater provided by an embodiment of the present invention;

[0025] Figure 3 for Figure 2 A side view of the support structure along direction EF is shown. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and beneficial technical effect of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the present invention, not for limiting the present invention.

[0027] See also Figures 1 to 3 In the busbar support structure of the present invention, the support structure comprises two support rods 1, at least one set of beam groups 2 and at least two guide columns 3. Optionally, the number of beam groups 2 is two, such as Figure 1 Same as shown.

[0028] Each group of crossbeams 2 includes two crossbeams 21 for fixing the busbar. More specifically, a gap is left between the two crossbeams 21 for passing the busbar. The two crossbeams 21 have a fixing effect on the busbar, that is, the busbar is fixed between the two crossbeams 21. The two support rods 1 are used to be relatively fixed on the installation platform. The installation platform can be, for example, the inner wall of a wind turbine tower, or the inside of a distribution cabinet, etc. The following description will be made by taking the installation platform as the inner wall of a wind turbine tower as an example. At least one guide column 3 is fixed on each support rod 1, wherein the number of guide columns 3 fixed on each support rod 1 is the same as the number of crossbeams 2. If there are two groups of crossbeams 2, the number of guide columns 3 fixed on each support rod 1 is also 2. The guide column 2 extends along the length direction of the busbar.

[0029] Wherein, both ends of the cross beam 21 are provided with a first opening, and the two cross beams 21 of each cross beam group 2 are connected by a fixing member 22, and the first opening is a non-enclosed opening, so that the first openings of the two cross beams 21 located at the same end together form a first fixing hole A. A guide column 3 on one of the support rods 1 passes through the first fixing hole A at one end of the two cross beams 2, and a guide column 3 on the other support rod 1 passes through the first fixing hole A at the other end of the two cross beams 2, thereby realizing the connection between the cross beam 2 and the support rod 1.

[0030] There is a force between the guide post 3 and the inner wall of the first fixing hole A, and the force makes the two beams 21 statically fixed on the guide post 3, and when the two beams 2 are acted upon by an external force, and the external force is sufficient to overcome the force between the guide post 3 and the inner wall of the first fixing hole A, the two beams 21 slide along the guide post 3 under the action of the external force. Therefore, when the busbar is deformed due to thermal expansion and contraction, if the busbar is clamped by the two beams 21, the movement of the busbar will generate a certain thrust or pull on the two beams 21, that is, there is an external force acting on the two beams 21, and when the thrust or pull is sufficient to overcome the force between the guide post 3 and the inner wall of the first fixing hole A, the two beams 21 slide upward or downward along the guide post 3 under the action of the thrust or pull, that is, the beams 21 move with the movement of the busbar, thereby preventing the beams 21 from hindering the normal movement of the busbar, which is beneficial to preventing the outer layer of the busbar from being torn and improving the life of the busbar.

[0031] It can be understood that the non-enclosed opening described in the embodiment of the present invention means that the opening has a gap, not a complete closed opening, so the non-enclosed first opening can be a half opening, or a third opening, or a quarter opening, such as Figure 1 and Figure 2 As shown, the first opening is a half-opening, so that by setting the first opening with a notch, the first openings corresponding to the positions on the two crossbeams 21 are arranged relatively, thereby a first fixing hole can be enclosed together. Further, a buffer pad, such as a rubber pad, can be arranged on the inner wall of the first opening, that is, a buffer pad is arranged on the inner wall of the first fixing hole A, which can play a buffering role between the crossbeam 21 and the guide column 3, reducing the scratches on the guide column 3 or the damage to the inner wall of the first fixing hole A caused by the crossbeam 21 sliding multiple times.

[0032] In some implementations, the force between the guide post 3 and the inner wall of the first fixing hole A can be achieved through the friction between the guide post 3 and the inner wall of the first fixing hole A, that is, the two crossbeams 21 themselves do not apply a pressing force to the guide post 3, the guide post 3 is in contact with the inner wall of the first fixing hole A, and there is friction between the two, and the friction can make the crossbeam 21 statically fixed on the guide post 3. When the busbar moves due to thermal expansion and contraction, it may be stuck by the crossbeam 21, that is, there is no relative movement between the crossbeam 21 and the busbar, and the continued movement of the busbar at this time will generate a certain thrust or pull on the crossbeam 21. When the thrust or pull is sufficient to overcome the friction between the guide post 3 and the inner wall of the first fixing hole A, the crossbeam 21 is pushed or pulled to slide up or down along the guide post, thereby preventing the crossbeam 21 from affecting the normal movement of the busbar.

[0033] Among them, the force generated by the busbar when it expands and contracts is generally small, so the friction between the guide column 3 and the inner wall of the first fixing hole A can be set to be relatively small, and the friction between the two can be set by setting the smoothness of the guide column 3 and / or the inner wall of the first fixing hole A. For example, the surface of the guide column 3 can be made a smooth surface to reduce the friction, so that the beam 21 can slide more easily on the guide column 3 and react more sensitively to the thermal expansion and contraction of the busbar. That is, the smaller the friction, the busbar may have a slight expansion movement to push the beam 21 to slide, so that the beam 21 is more adaptable to the movement of the busbar, and the smooth guide column 3 can also make the sliding of the beam 21 smoother to avoid jamming during the sliding process.

[0034] When a buffer pad is provided on the inner wall of the first fixing hole A, the friction force between the guide pillar 3 and the inner wall of the first fixing hole A is the friction force between the guide pillar 3 and the buffer pad.

[0035] In other implementations, the acting force between the guide column 3 and the inner wall of the first fixing hole A may be the clamping force of the two cross beams 21 on the guide column 3, that is, the two cross beams 21 have a clamping effect on the guide column 3, and therefore, when the cross beam 21 is subjected to an external force sufficient to overcome the clamping force, the cross beam 21 will slide along the guide column 3.

[0036] Among them, the clamping force of the two beams 21 on the guide column 3 can be set according to the force exerted on the beam 21 when the busbar moves due to thermal expansion and contraction. In practical applications, the clamping degree of the two beams 21 on the guide column 3 can be set through a limited number of experiments. For example, by simulating different degrees of thermal expansion and contraction of the busbar, and observing whether the beam 21 slides along the guide column 3 under various degrees of thermal expansion and contraction, the clamping degree of the beam 21 on the guide column 3 can be determined according to actual needs.

[0037] The guide pillar 3 and the support rod 1 may be connected together by welding, or may be fixed by screwing.

[0038] Furthermore, the support rod 1 can be provided with a second fixing hole (not shown) at a position corresponding to the first fixing hole A, and the guide column 3 is fixedly connected to the support rod 1 after passing through the second fixing hole. More specifically, one end of the guide column 3 is fixed to the support rod 1 after passing through the first fixing hole and the second fixing hole in sequence, such as by welding or screwing, and the other end of the guide column 3 extends along the length direction of the busbar.

[0039] Optionally, the first opening on one end of the crossbeam 21 is a semicircular hole, and the first opening on the other end is a semi-elliptical hole. Figure 2Based on the view of FIG. 1 , the first opening at the right end of the crossbeam 21 is a semicircular hole, and the first opening on the right end is a semi-elliptical hole, so that in the first fixing hole surrounded by the first openings of the two crossbeams 21, the first fixing hole A on the right is a circular hole, and the first fixing hole A on the left is an elliptical hole. Further, the guide column 3 inserted in the elliptical hole has a smooth surface, and it can be fixed to the support rod 1 by welding, such as Figure 1 and inserted in the circular hole of the guide post 3 at one end of the threaded end, the other end of the nut end, the guide post 3 is located between the threaded end and the nut end of the region may be a smooth surface to facilitate the sliding of the beam 21, such as Figure 1 The right end guide post 3 shown has a threaded end which is inserted into the second fixing hole of the support rod 1 and then fixed to the support rod 1 via a nut 12 .

[0040] The support rod 1 may be a groove structure, the outer surfaces of the groove bottom walls of the two support rods 1 are opposite surfaces, the cross beam 21 is located on the outer side wall of the groove of the groove structure, and the two side walls of the groove structure are provided with second fixing holes, one end of the guide column 3 passes through the second fixing holes on the two side walls in sequence, and one end of the guide column 3 is fixedly connected to the second fixing hole on the side wall away from the cross beam 21. The guide column 3 fixed by the nut 12 is fixed to the side wall away from the cross beam 21 by two nuts 12.

[0041] Through the above method, the guide column 3 and the support rod 1 can be fixedly connected.

[0042] The fixing member 22 may be a bolt, and through holes are provided on both beams 21. The fixing member 22 penetrates through the through holes on both beams 21 to connect the two beams 21 together. Figure 1 As shown, there are six fixing members 22 , and accordingly, there are six through holes on each crossbeam 21 .

[0043] Optionally, the through hole on the cross beam 21 can be a threaded hole, so that the fixing member 22 is threadedly connected to the threaded hole to fix the two cross beams 21, and the gap between the cross beams 21 can be adjusted by the depth of the knob fixing member 22 entering the threaded hole. Alternatively, the through hole on the cross beam 21 can also be a hole with a smooth hole wall, and the fixing member 22 is fixed by a nut after passing through the through holes of the two cross beams 21, and the gap between the two cross beams 21 can be adjusted by tightening the nut on the fixing member 22 or twisting out the fixing member 22. Therefore, by adjusting the gap between the two cross beams 21, the clamping force of the two cross beams 21 on the guide column 3 can be adjusted, and the clamping force of the two cross beams 21 on the busbar can also be adjusted.

[0044] Among them, continue to refer to Figure 1 and Figure 2 A plurality of second openings are also provided in the area between the two ends of the crossbeam 21, and the second openings are also non-enclosed openings. As shown in the figure, three second openings are provided on each crossbeam 21, and the second openings corresponding in position of the two crossbeams 21 of the same crossbeam group 2 together form a third fixing hole B, and each third fixing hole B is used to pass a busbar, that is, the busbar passes through the third fixing hole B between the two crossbeams 21, and the two crossbeams 21 fix the busbar by clamping the busbar.

[0045] In order to prevent the busbar from being scratched, a buffer pad may be provided on the hole wall of the second opening. The buffer pad may be, for example, a sponge pad or a silicone pad, so as to provide a buffer for the busbar.

[0046] Through the support structure of the present invention, by making the two beams 21 in each beam group 2 slide along the guide column 3, the beams 21 can adapt to the thermal expansion and contraction movement of the busbar, avoid the beams 21 hindering the movement of the busbar and causing damage to the busbar, thereby increasing the life of the busbar.

[0047] The present invention is not limited to what is described in the specification and implementation modes, and therefore additional advantages and modifications can be easily realized by those skilled in the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.

Claims

1. A busbar support structure, characterized in that: It comprises two support rods (1), at least one set of crossbeams (2) and at least two guide pillars (3); Each group of the crossbeam groups (2) comprises two crossbeams (21) for fixing the busbar, the two support rods (1) are used to be relatively fixed on the mounting platform, at least one guide column (3) is fixed on each support rod (1), the guide column (3) extends along the length direction of the busbar, both ends of the crossbeam (21) are provided with a first opening, the two crossbeams (21) of each group of the crossbeam groups (2) are connected by a fixing member (22), the first opening is a non-closed opening, so that the first openings at the same end of the two crossbeams (21) jointly form a first fixing hole (A), wherein a guide column (3) on one support rod (1) passes through the first fixing hole (A) at one end of the two crossbeams (21), and a guide column (3) on the other support rod (1) passes through the first fixing hole (A) at the other end of the two crossbeams (21); There is an acting force between the guide column (3) and the inner wall of the first fixing hole (A), the acting force causes the two cross beams (21) to be fixed statically on the guide column (3), and when the two cross beams (21) are acted upon by an external force and the external force is sufficient to overcome the acting force, the two cross beams (21) slide along the guide column (3), the acting force being the clamping force of the two cross beams (21) on the guide column (3) and the friction force between the guide column (3) and the inner wall of the first fixing hole (A), A plurality of second openings are also provided in the area between the two ends of the crossbeam (21), wherein the second openings are non-enclosed openings, so that the second openings corresponding in position on the two crossbeams (21) together form a third fixing hole (B), and each of the third fixing holes (B) is used to fix a busbar.

2. The busbar support structure according to claim 1, characterized in that: The guide column (3) and the support rod (1) are fixed by welding or screwing.

3. The support structure according to claim 1, characterized in that: The support rod (1) is provided with a second fixing hole at a position corresponding to the first fixing hole (A), and the guide column (3) is fixedly connected to the support rod (1) after passing through the second fixing hole.

4. The busbar support structure according to claim 1, characterized in that: The first opening on one end of the cross beam (21) is a semicircular hole, and the first opening on the other end is a semi-elliptical hole, so that the first fixing holes (A) on one end of the two cross beams (21) are circular holes, and the first fixing holes (A) on the other end are elliptical holes.

5. The busbar support structure according to claim 4, characterized in that: The guide post (3) inserted into the elliptical hole has a smooth surface, and one end of the guide post (3) inserted into the circular hole is a threaded end, and the other end is a nut end; The support rod (1) is provided with a second fixing hole at a position corresponding to the first fixing hole (A), and the threaded end passes through the second fixing hole and is fixed to the support rod (1) via a nut (12).

6. The busbar support structure according to claim 1, characterized in that: The fixing member (22) is a bolt, and through holes are provided on the two cross beams (21). The bolt cooperates with the through holes to connect the two cross beams (21).

7. The busbar support structure according to claim 6, characterized in that: The number of the fixing members (22) is plural, and the number of the through holes is the same as the number of the fixing members (22).

8. The busbar support structure according to claim 1, characterized in that: Buffer pads are provided on the hole walls of the first opening and the second opening.

9. The busbar support structure according to claim 1, characterized in that: The number of the crossbeam groups (2) is two, and the number of guide posts (3) on each support rod (1) is the same as the number of the crossbeam groups (2).

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